Okay, the problem is, these files can be overwritten (they won't be
locked by the OS for example). I need to make sure that:
 - Ant don't overwrite them
 - An error is triggered, to alert the user.



2009/1/27 Chun Ji <c...@pro-unlimited.com>:
>
> It happens if these existing files can not be overwritten.
>
> -Charlie
>
> -----Original Message-----
> From: Yves Dessertine [mailto:yvesd.pub...@gmail.com]
> Sent: Tuesday, January 27, 2009 9:38 AM
> To: Ant Users List
> Subject: Re: Make copy task fail if any destination file already exists?
>
> I'll explain a bit more.
>
> I have the following example build.xml file :
>
> <project name="fooproject" default="usage" basedir=".">
>        <target name="foo">
>                <copy toDir="targetTree">
>                        <fileset dir="sourceTree" />
>                </copy>
>        </target>
>
>        <target name="usage">
>                <echo>foo bar</echo>
>        </target>
> </project>
>
>
>
> Project layout looks like this :
>
> testproj
>  +--- build.xml
>  +--- sourceTree
>       +--- bar.txt
>       +--- subdir
>             +--- boo.bmp
>             +--- boo1.bmp
>  +--- targetDir
>       +--- <any number of files here>
>       +--- subdir
>             +--- otherfile_only_in_target.txt
>             +--- <any number of files here>
>             +--- foo1.bmp         <== this already exists: error!
>
> Its task is to copy any number of files from sourceDir to targetDir,
> but throwing an error if any file to be copied already exists in
> targetDir
>
> Here, I need the copy task to fail because subdir/foo1.bmp already
> exists. It is possible to do such a thing w/ ant ?
>
> Regards,
>
> Yves Dessertine
>
>
> 2009/1/26 Yves Dessertine <yvesd.pub...@gmail.com>:
>> Thank you for your answer. the <available> task is interessting, but
>> it isn't what I need. What I need is to copy a directory with
>> subdirectories within another dir, with subdirs which might have the
>> same name (to merge the contents of both), but while triggering an
>> error if any file already exists in the target dir.
>>
>> This looks quite complicated to do with ant.
>>
>>
>> 2009/1/26  <jan.mate...@rzf.fin-nrw.de>:
>>>>It is possible with Ant to make a copy task fail if any destination
>>>>file already exists?
>>>>
>>>>I found no clue in the docs (noticed only the "failonerror" param in
>>>>copy task (http://ant.apache.org/manual/CoreTasks/copy.html) and in
>>>>the condition for the "fail" task, but nothing relevant IMHO).
>>>>
>>>>I know it would be possible to check the existance of an entire
>>>>folder, but this isn't suitable for my project.
>>>
>>>
>>> This is not <copy>s job.
>>> Try <available>.
>>>
>>>
>>> Jan
>>>
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>>>
>>
>
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